復(fù)制代碼 代碼如下:

create table tb
(
Name varchar(10) ,
Subject varchar(10) ,
Result int
)
insert into tb(Name , Subject , Result) values('張三' , '語文' , 74)
insert into tb(Name , Subject , Result) values('張三' , '數(shù)學(xué)' , 83)
insert into tb(Name , Subject , Result) values('張三' , '物理' , 93)
insert into tb(Name , Subject , Result) values('李四' , '語文' , 74)
insert into tb(Name , Subject , Result) values('李四' , '數(shù)學(xué)' , 84)
insert into tb(Name , Subject , Result) values('李四' , '物理' , 94)
go

--靜態(tài)SQL,指subject只有語文、數(shù)學(xué)、物理這三門課程。
select name 姓名,
max(case Subject when '語文' then result else 0 end) 語文,
max(case Subject when '數(shù)學(xué)' then result else 0 end) 數(shù)學(xué),
max(case Subject when '物理' then result else 0 end) 物理
from tb
group by name

--動態(tài)SQL,指subject不止語文、數(shù)學(xué)、物理這三門課程。

declare @sql varchar(8000)
set @sql = 'select Name as ' + '姓名'
select @sql = @sql + ' , max(case Subject when ''' + Subject + ''' then Result else 0 end) [' + Subject + ']'
from (select distinct Subject from tb) as a
set @sql = @sql + ' from tb group by name'
exec(@sql)